In order to enable both a circuit scale of an apparatus that receives signals via antennas and a band of an interface between apparatuses to be small, a first communication apparatus according to the present invention includes: a reception processing unit configured to receive, from a second communication apparatus which receives signals via a plurality of antennas, channel related information related to a channel of signals received via the plurality of antennas; and a transmission processing unit configured to transmit, to the second communication apparatus, weight information related to receiving antenna weights by which the second communication apparatus multiplies signals received via the plurality of antennas, the weight information being generated based on the channel related information.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The method according to claim 1, wherein the weight information is information indicating the receiving antenna weights.
3. The method according to claim 2, wherein the weight information includes information indicating respective weights included in the receiving antenna weights.
5. The method according to claim 1, wherein the weight information is generated based on channel estimates calculated by the channel estimation.
7. The method according to claim 6, wherein the information related to use of the receiving antenna weights includes frequency information related to frequencies for which the receiving antenna weights are used.
8. The method according to claim 6, wherein the information related to use of the receiving antenna weights includes time information related to time when the receiving antenna weights are used.
9. The method according to claim 1, wherein the reference signals are reference signals transmitted during a specific period in a time frame.
11. The method according to claim 1, wherein the reference signals are sounding reference signals (SRS) or demodulation reference signals (DMRS).
15. The method according to claim 1, wherein the receiving antenna weights are antenna weights which the radio unit also uses for generation of signals to be transmitted via the plurality of antennas.
16. The method according to claim 14, wherein the radio unit is an apparatus which performs communication in time division duplex (TDD).
17. The method according to claim 1, wherein the receiving antenna weights are weights by which the radio unit multiplies signals from the terminal apparatus, the signals being received via the plurality of antennas.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
September 27, 2021
February 7, 2023
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